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<p>[QUOTE=&quot;Cloudsweeper99, post: 87666, member: 3011&quot;]I&#039;ve removed verdigris from a few low value circulated copper coins with light strokes with a soft toothbrush.&nbsp; It did not leave any marks visible with even low powered magnification, so maybe copper is hard enough to withstand this treatement.&nbsp; I would prefer this approach to using a fingernail or toothpick which are both harder than the bristles on the brush and could do more damage to the coin.[/QUOTE]</p><p><br /></p>

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